I've encountered an error, as stated in the title when I try to import a jpeg file. In the past I've used Photoshop to simply gust save the file with RGB ... (forgot the full terminology) and boom, it worked.

Since I only use AE and have no othher need for Photoshop, I've not renewed Photoshop again.

When I encountered this error again, I've upgraded to the latest version of AE again, but it is still not working. There is nothing wrong with the jpeg file.